Stoker.



' and resident of Louisville,

"means for operating carry the fuel associated with novel means tubes of the boiler,

sky-lights,

WILLIAM A. cAsLER, or LOUISVILLE, KENTUCKY.

sroxnn.

Specification of Letters Patent.

Patented naar. 1e, aars.

Application med Mai-eh es, 1915. serial No. 16,454.

To all wzom t may concern:

Be it knownthat I, WILLIAM A. CAsLER, a citizen of the United States of America, in the county of Jeerson and State of Kentucky, have invented certain new and .useful Improvements in Stokers,of which the following is a specification.

This invention relates to stokers and has for its object the provision of novel means for conveying fuelv from storage bins to the hoppers of stokers, which latter are stationed'at convenient positions with relation to the furnaces with which they-are adapted to coact for maintaining the fuel supply therein, and the provision of novel the conveyers which for automatically stopping the conveyer actuator, said controlling means being regulated or moved by fuel delivered by the conveyer.

A still further object of this invention is to provide an arrangement of parts by which thestoker hoppers are automatically supplied with fuel and in which the mechanism for delivering the fuelto the said hoppers isthrown out ofaction when the said hoppers are full, it being understood that it is preferable to regulate the of fuel proportional `to thel consumption thereof, this invention being provided vas a safeguard so that should the fuel supply to -the hopper yexceed the amount of fuel'consumed, the) conveyer driver or actuator would be arrested. l

It is furthermore an objectof this invenltion to .provide a stoker of the character noted in accessible position without occupying portions of the space-necessary for the boller repairs and to so locate the means for moving the coal with reference to the stokers and boilers that inspection and repairs of either can be readily made.

In carrying out the invention, convenient means *are provided whereby the space occupied by thestoker and themeans for delivering fuel thereto 'are below the lowest thus permitting the lighting -of the boiler the said apparatus furthermore obviating the manipulation of swinging feed spouts and parts associated with` such loose feed spouts, now'in common use, the said invention furthermore avoiding the coal dust usually caused when Stoker hopwith the addition Supply of boilerl furnaces by 11 and I provide a series of` stoker hoppersl room by monitors orA pers are filled through such spouts 'as' usually results when the coal drops into f .i

the bins. i

With, the foregoing and other objects in view, the Ainvention consists in the details of construction, and combination of parts to be hereinafter more fully set forth and claimed. p

In describing the invention in detail, reference will be had to the Vaccompanying drawings forming part of this specification wherein like characters denote corresponding parts in the several views, and in which-f Figurel illustrates a front elevation of a series of boilers with their 'stoker hoppers;

Fig. 2 illustrates a plan viewof the boilers and stoker hoppers shown in Fig. 1 of a corresponding series of boilers immediately opposite and facing and in the arrangement.

tion of the'boiler shown in Fig. 2'

' Fig. 4 illustrates a left hand enli` elevation of the boiler shown in Fig. 2;

Fig.v `5 illustrates a sectional view on the line A-A of Figs. 2 and 3, on an enlarged scale as compared with the scale of Fig. 1; and 1 Fig. A6 illustrates al sectional line B-B of FigQ. .I In these drawings,

view on the I identify th'e series the reference numeral 12 positioned to deliverfuel to the furnaces, thesald Stoker hoppers being relatively low as 'compared with the furnaces,'the object of which has been stated.

A conveyer, 13 extends along the boiler room and over the stoker hoppers.' The chute or'casingof the conveyer has openings 14 leading to the stoker hoppers so that fuel carried by the conveyer and reaching the said vopenings falls into the hoppers. The openings may be .closed by sliding .gates 23.' The conveyer casing .is furthermore provided with openings which communicate withthe outpreferably a screw conveyer,

let spouts 15 through which fuel that has passed a hopper descends and in which it is confined. v l

The conveyer is supplied with fuel from the storage bin 16 throughthe pipes -or chutes 17 leading to the conveyer casing' which is hinged to the outlet or spout 15,

and the trap door furthermore carries one element of the switch by which the current through the conductors is controlled.

Each outlet or spout 15 is further provided with a cut off gate 26 so that any one or more of the outlets or spouts '15 can be closedV according to the number of stolzers that are in operation. Should the end furnace be temporarily outof commission, one of the intermediate outlets would be opened, so that the fuel would not pass the point of the open outlet. yShould one of the intermediate furnaces be out of commission, the corresponding 'outlet'or spout would be closed soV that the fuel would be permittedl topass the intermediate outlet Aor spout,

guarding the stolzer hopper which is out of commission allowing the fuel to be conv eyed to the more remote furnace.

In operation, .the fuel which would be delivered to the outlet or spout would rise therein until its pressure against the door 27v would carry the said door outwardly and dise'ngage the switch member carried thereby from the stationary switch member, thus lbreaking the circuit and arresting the m0- tor.

trate the position of the fuel at the lower rlhe dotted lines 29 of Fig. 6 illusopening ofthe .outlet or spout 15 and the said lower end i's shown vas terminating Va distance above the floor line, which permits or establishes. a clearance through which the fuel may be removed when it is desired tol reestablish acircuit by closing the door of the outlet or spout.

As has been stated heretofore, it is the purpose of the inventor to have the mechanical stolzer and parts associated therewith located below the space lrequired for the repair of boilers, the lower line of which is indi- `'cated by the dotted line 31, of Fig. 8.

. This patent is limited to claims covering fuel conveyer control. For claims covering the relative location of conveyer, conveyer control means and boiler tubes, reference will be had to my copen'ding application, Serial No. 203,939, iiled Nov. 26, 1917.

l claim- 1. 1n combination with a series of Stoker hoppers, a conveyer operating above the stolzers for delivering fuel thereto, means adjoining several stolzer .hoppers operated by fuel pressure for controlling the delivery of fuel to the stolzers, and means for shifting the control of the delivery of fuel to any of the fuel pressure means adjoining .the several stolzer hoppers.

2. In combination with a series of stolzer hoppers a conveyer operating above the stolzers for delivering fuel` thereto, several stolzer hoppers equipped with fuel pressure operated means for controlling the delivery of fuel to the stolzers, means for shifting the fuel delivery control to any of the several fuel pressure .operated means.

3. In combination with a series of stolzer hoppers a power driven conveyer operating above the stolzers for delivering fuel thereto, several stolzer hoppers equipped with fuel pressure means for cutting olfthe ypower driving the conveyer, means for shifting the power control to any of the several fuel pressure operated power control means.

4. `In combination with a series of stolzer hoppers a variable feed conveyer operating above the stolzer hoppers for delivering fuel thereto, several stolzer hoppers equipped with fuel pressure operated means for controlling the conveyer, means for shifting the conveyer controlr to any of the4 fuel pressure operated control means should the conveyer feed rate prove excessive. i

5. In combination with a series of stolzer hoppers a conveyer operating above the stolzers for delivering fuel thereto, several stolzer hoppers equipped with fuel pressure operated means for controlling the delivery of fuel to the stolzers, inoperative stolzers in the series, means for rendering inoperative the fuel delivery and control means of the inoperative stolzers, means for shifting the control to anyof 4the fuel pressure operated control means of the operative stolzer hoppers. i

6. In combination with a series of stolzer hoppers a conveyer operating above the stolzer hoppers for delivering fuel thereto, means forl operating the conveyer, an outlet spout adjacent each stolzer, each outlet spout having a switch in circuit with the conveyer operating means and means .for mounting the switch whereby baclz pressure of the fuel in the outlet spouts will brealz the circuit for regulating the delivery 'of fuel to the outlet spouts.

In testimony whereof, l hereunto aiiX my signature in the presence of two wltnesses.

WlILLlAM A. CASLER.

Witnesses:

F. E. DE LAMASTER, ANNA HANNA; 

